Prem Watsa's position in ATS . is currently worth $78.8 Million. That's 4.25% of their equity portfolio (8th largest holding). The investor owns 2.68% of the outstanding ATS . stock. The first ATS . trade was made in Q2 2023. Since then Prem Watsa bought shares two more times and sold shares on one occasions. The stake costed the investor $75.5 Million, netting the investor a gain of 4.4% so far.